How to use asn1js - 10 common examples

document.getElementById("cms-dgst-algos").innerHTML = "";

    document.getElementById("cms-certs").style.display = "none";
    document.getElementById("cms-crls").style.display = "none";

    const certificatesTable = document.getElementById("cms-certificates") as HTMLTableElement;
    while (certificatesTable.rows.length > 1)
        certificatesTable.deleteRow(certificatesTable.rows.length - 1);

    const crlsTable = document.getElementById("cms-rev-lists") as HTMLTableElement;
    while (crlsTable.rows.length > 1)
        crlsTable.deleteRow(crlsTable.rows.length - 1);
    // endregion

    // region Decode existing CMS Signed Data
    const asn1 = asn1js.fromBER(cmsSignedBuffer);
    const cmsContentSimpl = new ContentInfo({ schema: asn1.result });
    const cmsSignedSimpl = new SignedData({ schema: cmsContentSimpl.content });
    // endregion

    // region Put information about digest algorithms in the CMS Signed Data
    const dgstmap: { [oid: string]: string } = {
        "1.3.14.3.2.26": "SHA-1",
        "2.16.840.1.101.3.4.2.1": "SHA-256",
        "2.16.840.1.101.3.4.2.2": "SHA-384",
        "2.16.840.1.101.3.4.2.3": "SHA-512"
    };

    for (let i = 0; i < cmsSignedSimpl.digestAlgorithms.length; i++) {
        let typeval = dgstmap[cmsSignedSimpl.digestAlgorithms[i].algorithmId];
        if (typeof typeval === "undefined")
            typeval = cmsSignedSimpl.digestAlgorithms[i].algorithmId;

// endregion

    // region Get a "crypto" extension
    const crypto = getCrypto();
    if (typeof crypto === "undefined") {
        alert("No WebCrypto extension found");
        return;
    }
    // endregion

    // region Put a static values
    certSimpl.version = 2;
    certSimpl.serialNumber = new asn1js.Integer({ value: 1 });
    certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.6", // Country name
        value: new asn1js.PrintableString({ value: "RU" })
    }));
    certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.3", // Common name
        value: new asn1js.BmpString({ value: "Test" })
    }));
    certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.6", // Country name
        value: new asn1js.PrintableString({ value: "RU" })
    }));
    certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.3", // Common name
        value: new asn1js.BmpString({ value: "Test" })
    }));

    certSimpl.notBefore.value = new Date(2016, 1, 1);
    certSimpl.notAfter.value = new Date(2019, 1, 1);

certSimpl.serialNumber = new asn1js.Integer({ value: 1 });
    certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.6", // Country name
        value: new asn1js.PrintableString({ value: "RU" })
    }));
    certSimpl.issuer.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.3", // Common name
        value: new asn1js.BmpString({ value: "Test" })
    }));
    certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.6", // Country name
        value: new asn1js.PrintableString({ value: "RU" })
    }));
    certSimpl.subject.typesAndValues.push(new AttributeTypeAndValue({
        type: "2.5.4.3", // Common name
        value: new asn1js.BmpString({ value: "Test" })
    }));

    certSimpl.notBefore.value = new Date(2016, 1, 1);
    certSimpl.notAfter.value = new Date(2019, 1, 1);

    certSimpl.extensions = []; // Extensions are not a part of certificate by default, it's an optional array

    // region "KeyUsage" extension
    const bitArray = new ArrayBuffer(1);
    const bitView = new Uint8Array(bitArray);

    bitView[0] = bitView[0] | 0x02; // Key usage "cRLSign" flag
    // bitView[0] = bitView[0] | 0x04; // Key usage "keyCertSign" flag

    const keyUsage = new asn1js.BitString({ valueHex: bitArray });

{
			outputArray.push(new asn1js.Constructed({
				optional: true,
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 3 // [3]
				},
				value: [new asn1js.Sequence({
					value: Array.from(this.extensions, element => element.toSchema())
				})]
			}));
		}
		//endregion
		
		//region Create and return output sequence
		return (new asn1js.Sequence({
			value: outputArray
		}));
		//endregion
	}
	//**********************************************************************************

* @property {string} [tbsCertificateVersion]
	 * @property {string} [tbsCertificateSerialNumber]
	 * @property {string} [signature]
	 * @property {string} [issuer]
	 * @property {string} [tbsCertificateValidity]
	 * @property {string} [notBefore]
	 * @property {string} [notAfter]
	 * @property {string} [subject]
	 * @property {string} [subjectPublicKeyInfo]
	 * @property {string} [tbsCertificateIssuerUniqueID]
	 * @property {string} [tbsCertificateSubjectUniqueID]
	 * @property {string} [extensions]
	 */
	const names = getParametersValue(parameters, "names", {});
	
	return (new asn1js.Sequence({
		name: (names.blockName || "tbsCertificate"),
		value: [
			new asn1js.Constructed({
				optional: true,
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 0 // [0]
				},
				value: [
					new asn1js.Integer({ name: (names.tbsCertificateVersion || "tbsCertificate.version") }) // EXPLICIT integer value
				]
			}),
			new asn1js.Integer({ name: (names.tbsCertificateSerialNumber || "tbsCertificate.serialNumber") }),
			AlgorithmIdentifier.schema(names.signature || {
				names: {
					blockName: "tbsCertificate.signature"

{
			sequenceLengthBlock.isIndefiniteForm = this.encryptedContent.idBlock.isConstructed;

			const encryptedValue = this.encryptedContent;

			encryptedValue.idBlock.tagClass = 3; // CONTEXT-SPECIFIC
			encryptedValue.idBlock.tagNumber = 0; // [0]

			encryptedValue.lenBlock.isIndefiniteForm = this.encryptedContent.idBlock.isConstructed;

			outputArray.push(encryptedValue);
		}
		//endregion

		//region Construct and return new ASN.1 schema for this object
		return (new asn1js.Sequence({
			lenBlock: sequenceLengthBlock,
			value: outputArray
		}));
		//endregion
	}
	//**********************************************************************************

new asn1js.Sequence({
						value: Array.from(this.crlVals, element => element.toSchema())
					})
				]
			}));
		}
		
		if("ocspVals" in this)
		{
			outputArray.push(new asn1js.Constructed({
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 1 // [1]
				},
				value: [
					new asn1js.Sequence({
						value: Array.from(this.ocspVals, element => element.toSchema())
					})
				]
			}));
		}
		
		if("otherRevVals" in this)
		{
			outputArray.push(new asn1js.Constructed({
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 2 // [2]
				},
				value: [this.otherRevVals.toSchema()]
			}));
		}

//region Create array for output sequence
		const outputArray = [];
		
		if(this.version !== CertificateRevocationList.defaultValues("version"))
			outputArray.push(new asn1js.Integer({ value: this.version }));
		
		outputArray.push(this.signature.toSchema());
		outputArray.push(this.issuer.toSchema());
		outputArray.push(this.thisUpdate.toSchema());
		
		if("nextUpdate" in this)
			outputArray.push(this.nextUpdate.toSchema());
		
		if("revokedCertificates" in this)
		{
			outputArray.push(new asn1js.Sequence({
				value: Array.from(this.revokedCertificates, element => element.toSchema())
			}));
		}
		
		if("crlExtensions" in this)
		{
			outputArray.push(new asn1js.Constructed({
				optional: true,
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 0 // [0]
				},
				value: [
					this.crlExtensions.toSchema()
				]
			}));

function passwordPrivacyInternal(password)
{
	//region Initial variables
	let sequence = Promise.resolve();
	
	const passwordConverted = stringToArrayBuffer(password);
	//endregion
	
	//region Create simplified structires for certificate and private key
	let asn1 = asn1js.fromBER(stringToArrayBuffer(fromBase64(certificateBASE64)));
	const certSimpl = new Certificate({ schema: asn1.result });
	
	asn1 = asn1js.fromBER(stringToArrayBuffer(fromBase64(privateKeyBASE64)));
	const pkcs8Simpl = new PrivateKeyInfo({ schema: asn1.result });
	//endregion
	
	//region Put initial values for PKCS#12 structures
	const pkcs12 = new PFX({
		parsedValue: {
			integrityMode: 0, // Password-Based Integrity Mode
			authenticatedSafe: new AuthenticatedSafe({
				parsedValue: {
					safeContents: [
						{
							privacyMode: 1, // Password-Based Privacy Protection Mode
							value: new SafeContents({
								safeBags: [
									new SafeBag({
										bagId: "1.2.840.113549.1.12.10.1.1",

toSchema(encodeFlag = false)
	{
		let tbsSchema = {};
		
		//region Decode stored TBS value
		if(encodeFlag === false)
		{
			if(this.tbs.length === 0) // No stored certificate TBS part
				return Certificate.schema().value[0];
			
			tbsSchema = asn1js.fromBER(this.tbs).result;
		}
		//endregion
		//region Create TBS schema via assembling from TBS parts
		else
			tbsSchema = this.encodeTBS();
		//endregion
		
		//region Construct and return new ASN.1 schema for this object
		return (new asn1js.Sequence({
			value: [
				tbsSchema,
				this.signatureAlgorithm.toSchema(),
				this.signatureValue
			]
		}));
		//endregion